Thread standard of Solenoid Valve

The thread of the solenoid valve, the most commonly used are G, NPT, RC thread and so on.

G is a 55 degree cylindrical pipe thread, belonging to the Wyeth thread family. Marked as G for cylindrical threads. Domestically, G threads are generally used.

The NPT is a 60° conical pipe thread. For general-purpose US standard taper pipe threads, NPT threads are generally used in countries such as the United States/Canada.

The PT tooth is an inch taper thread with a tooth angle of 55°, which is most commonly used in sealing.

ZG is commonly called tube cone, that is, the thread is made of a conical surface. The general water pipe joints are like this. The old national standard is labeled Rc.

The metric thread is expressed by the pitch. The US and British thread is expressed by the number of threads per inch. This is the biggest difference. The metric thread is a 60-degree equilateral tooth type, and the inch thread is an isosceles 55-degree tooth type. 60 degrees. Metric threads are used in metric units, and American-English threads are used in imperial units.

The pipe thread is mainly used for the connection of the pipe, and the inner and outer threads are closely matched, and there are two kinds of straight pipe and tapered pipe. The nominal diameter refers to the diameter of the pipe to which it is connected. It is obvious that the diameter of the thread is larger than the nominal diameter.

1/8, 1/4, 1/2, is the nominal diameter of the inch thread in inches.